I am intrigued by the following bit of code in BIRD 1.3.7 proto/ospf/iface.c

[...]

if (flags & IF_CHANGE_UP)

    {

      int done0 = 0;

      struct ospf_area *oa;

      WALK_LIST(oa, po->area_list)

      {

int iid = 0;

struct ospf_iface_patt *ip;

while (ip = ospf_iface_patt_find(oa->ac, a->iface, iid))

{

 ospf_iface_new(oa, a, ip);

 if (ip->instance_id == 0)

   done0++;

 iid = ip->instance_id + 1;

}

      }

I might be wrong here, but if I understand correctly, the code expects the set of instance IDs configured on each interface to be of the form [| 0, n |].

In addition, I haven't seen any option to manually set Instance IDs.

Is there any reason why this should be the case? I would like to manually set the instance ID to something other than 0, without necessarily having other protocol instances running on the same interface.

Thanks

- Benjamin